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English definition of “serial number”

serial number

noun [C]  /ˈsɪər·i·əl ˌnʌm·bər/ us  
a number on a product, esp. electronic or electrical goods, that is different from all the other product numbers, used to prove who it belongs to if it is stolen or damaged
(Definition of serial number from the Cambridge Academic Content Dictionary © Cambridge University Press)
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